Sewing-machine



(No Model.) 2 Sheets-Sheet 1. M. W. CLAY. SEWING MACHINE.

No. 360,087. Patented Mar. 29. 1887.

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SEWING MACHINE. No. 360,087.

Patented Mar. 29, 1887.

N. PETERS. Fhclo-Lnhogrzphcr, Washington. D. c.

ilivirnn STATES ATENT Fries.

MOSES \V. CLAY, OF NEOSHO, MISSOURI, ASSIGNOR OF ONE-THIRD TO JOHN A. BALD\VIN, OF CHICAGO, ILLINOIS.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 360,087, dated March 29, 1857.

Application filed March 22, 1886. Serial No. 196.124. (No model.)

To aZZ whom it may concern:

Be it known that I, MosEs \V. CLAY, a citizen of the United States of America, residing at Neosho, in the county of Newton and State 5 of Missouri, have invented certain new and useful Improvements in Sewing-Hachines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain improvements in sewing-machines, which improvements are fully set forth and explained in the following specification and claims, reference being had to the accompanying drawings and r 5 the letters and figures thereon, making a part of this specification, in whicl1 Figure 1 is a perspective view of the machine as it would appear secured to its tabletop ready for use. Fig. 2 is a side elevation 20 of the machine and a cross-section of a portion of its supporting table-top, a portion of the arm being broken away to show the interior working parts. Fig. 3 is a cross-sectional view of the upright shaft, showing a brakez 5 wheel thereon, and a brakeshoe and its lever for starting, stopping, and controlling the speed of the machine. Fig. 4 is a bottom plan view of the machine-bed, showing the working parts theretoattached. Fig. 5 is a cross-sec 0 tion of the drive-shaft, taken on a line at the ,back of the drive miter gear, showing the pawland-ratchet mechanism for permitting the drive-spring to be wound up. Fig. 6 is a face view of the trammel-wheel for driving 35 the needle-bar, and showing the needle-bar connected therewith through the medium of a pitman, and slides for operating in the crosschannels of said wheel; and Fig. 7 is a side view of the coil drive-spring, a cross-section 0 of the drive-shaft attached thereto, an end view of the supporting-frame of said shaft, and of a portion of the table-top to which it attaches.

Referring to the drawings, D represents the upper end of the upright shaft S, having its upper end boxed in said arm.

S is the horizontal drivc-shaft arranged beneath the table-top in hanger-boxes c and c, secured to the underside of the table-top, and has fixed thereon the miter gear 0, which meshes with miter-gear 0, fixed on the lower end of upright shaft S. Hanger 0' has its ex tending end curved upward to form the arm 0 provided 011 its upturned end with a step box for supporting upright shaft S, and a horizontal box for supporting the extending end of drive-shaft S. i

The power to drive shaft S is derived from the coil-spring R, secured thereon and between said hangers c 0 to the bolt (1, passing throughsaid hangers near the table-top. Said drive shaft S has secured thereon a ratchetwheel, y, for engaging with. a spring-pawl on the back of said miter-gear 0, (see Fig. 5,) which gear-wheel is loose on said shaft. This construction is for the purpose of permitting the drive-spring to be wound up by means of a key applied to its square end it. The extending inner end of said drive-shaft S is provided with a pair of collars, Z Z, the collar Z being fixed thereon, and the collar Z l0osc,so it may reciprocate thereon. Said collars are connccted by means of a pair of oppositely-arranged bow-springs \V IV, to the centers of which are secured a pair of fans,V V. These fans are for the purpose of regulating the speed of the machine and causing it to be uniform by means of their resistance to the atmosphere, said resistance being greater when they are farthest from the 'drive-shaft. The centrifugal force developed by the rapid rotation of shaft S, when the spring It is first wound, will cause said fans to be thrown outward from said shaft, which is permitted by the sliding of collar 5 thereon, and the bowing of the springs \V V outward,and thus check too rapid motion of the machine when the spring R is first wound. As the strength of spring Rdiminishes by its unwinding, and the rotation of shaft S tends to becomeless rapid, the fans V V will be drawn nearer thereto, and causeless resistance,so that by this means auniform speed is given the machine at all times.

I is a spur-gear fixed on the upright shaft S,

needle-bar N is connected with the trammelwheel E, on the outer end of horizontal shaft S, through the medium of the pitman P at g,

and the slides G and G, as shown in Figs. 2

and 6. The faceplate H secures the needlebar N to the head H of the arm A, and covers :lhe trammel-wheel and its pitman,as shown in These t-rammel-wheels operate, in conjunction with each other, to bring the needle and shuttle together at the proper time, and are similar in construction, both having two faceslots crossing each other at right angles, form ing guides for their respective slides,to which the pitmen attach. As the trammel-wheels rotate, the slides keep in their own grooves, crossing each others tracks, making four strokes or two reciprocations of the pitmen at each revolution, thus giving great speed to the needle and shuttle, with comparatively slow speed of the other parts.

As a means for stopping, starting, and assisting in regulating the speed of the machine, a brake-wheel, a, is fixed on upright shaft S, immediately above the table-top, as shown in Figs. 2 and 3.

A brake-shoe, a, may be brought to bear against said brake-wheel through the medium ofthelink a,connectingitwith thelever B,having its rear end pivoted at a to the bed D, and having its opposite end extending out through a horizontal slot at the foot of arm A to engage with a notched holder, B, as shown in Figs. 1, 2, and 3. By means of this arrangement of parts the machine may be started, stopped, or its speed regulated in conjunction with said fans.

The other parts of the machine I do not describe, as they form no part of this invention.

Having thusdescribed my invention, what I claim as new, and desire to secure by Letters Patent, is as follows, to wit:

1. In the sewing-machine shown and described, and in combination with the bed D and arm A, the horizontal shaft S, having the miter-gear J and trammel-wheel E, the needle-bar N, the pitman P, having the slides G G, the upright shaft S, having the mitergear J, spur-gear I, brake-wheel a, and mitergear 0, the shaft S, having the loose miter-gear 0 provided with the spring-pawl, the trammelwheel F, having the integral spur-gear I, the pitman P, having the slides m m, and the shuttle-carrier T, as and for the purpose set forth.

2. In the sewing-machine shown and described, the combination of the upright shaft S, having the spur-gear I, t-rammel-wheel F, having the integral spur-gear I, pitman P, having the slides in and m, and shuttle-carrier T, as and for the purpose set forth.

3. In the sewing-machine shown and described, the combination of the trammel-wheel E, needle-bar N, pitman P, having the slides G G, and the trammel-wheel F, pitman P, having the slides m m, shuttle-carrier T, and connecting mechanism, as and for the purpose set forth.

4. In the sewing-machine shown and described, the combination of shaft S, having the miter-gear o, fixed collar Z, sliding collar Z, bow-springs W NV and fans V V, upright shaft S, having the mitergears o and J, spurgear I, and brake-wheel a, brake-shoe a, link a, lever B, horizontal shaft S, having the miter-gear J and trammel-wheel E, pitman P, having the slides Gand G, needle-bar N, trammel wheel E, having the integral spur-gear I,

pitman P, having the slides m and m, andshuttle-carrier T, as and for the purpose set forth.

MOSES W. CLAY.

\Vitnesses:

P. R. SMITH, H. 0. SMITH. 

